The global advertising market will start to stabilize next year, following double-digits declines in 2009, but more-established markets such as the U.S. won't gain steam for some time, according to business forecasts. Fallout from the global financial crisis will linger in the U.S. ad market in 2010, the forecasts say. For example, Interpublic Group media agency Magna predicts that U.S. ad revenues will grow just 0.2% to $162.7 billion and reach low-single-digit growth rates by 2012.